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#include <iostream>

using namespace std;

#define ULL unsigned long long

int main()
{
    ios_base::sync_with_stdio(0);

    ULL sum = 0;
    ULL minOdd = 1001;

    int n;
    cin >> n;

    for(int i=0; i<n; i++)
    {
        ULL a;
        cin >> a;
        if(a%2 == 1 && a < minOdd)
            minOdd = a;
        sum += a;
    }

    if(sum%2 == 0)
        cout << sum << "\n";
    else if(sum-minOdd != 0)
        cout << sum-minOdd << "\n";
    else
        cout << "NIESTETY\n";

    return 0;
}